head to head · open source
rea vs msw
rea has 422,352 GitHub stars, 105,329 forks, 70 open issues and last shipped yesterday. msw has 18,329 stars, 644 forks, 37 open issues and last shipped 17 days ago. rea leads on adoption by 2,204% (422,352 vs 18,329 stars). rea is written in TypeScript under MIT; msw is written in TypeScript under MIT. rea has attracted 25% as many forks as stars, msw 4%. rea was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| rea | msw | |
|---|---|---|
| GitHub stars | ★ 422K | ★ 18K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-11-02 | 2026-10-17 |
| Forks | ⑂ 105K | ⑂ 644 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick rea if
- You weight community size — 422K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick msw if
- You want the msw feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and msw fits your workflow better
About rea
English · 简体中文 · 繁體中文 · 日本語 · 한국어 · Türkçe · Русский · Tiếng Việt · ไทย · Deutsch · Español · Français · Українська · Polski · Português (Brasil) · العربية · فارسی REA: Reverse Engineer Anything One MCP for reverse engineering across binaries, applications, and runtime behavior. See a feature you like. Understand how it works, down to the binary level. Website · Guides · Showcases Quick start · How REA works · What you can analyze · Showcases · FAQ · Documentation npx rea agents setup Join the Reverse Engineering Community Discord · Q&A · Show and Tell See a feature in an app that you want in your own product?…
About msw
Mock Service Worker Industry standard API mocking for JavaScript. Join our Discord server Features Seamless . A dedicated layer of requests interception at your disposal. Keep your application's code and tests unaware of whether something is mocked or not. Deviation free . Request the same production resources and test the actual behavior of your app. Augment an existing API, or design it as you go when there is none. Familiar & Powerful . Use Express like routing syntax to intercept requests. Use parameters, wildcards, and regular expressions to match requests, and respond with necessary status codes, headers…
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Frequently asked questions
Is rea or msw more popular?
rea has 422,352 GitHub stars and msw has 18,329. rea has the larger community by that measure.
Are rea and msw free?
Both are open source. rea is licensed under MIT and msw under MIT. Neither carries a licence fee.
What is the difference between rea and msw?
rea is written in TypeScript and msw in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, rea or msw?
Choose rea if you want the larger community (422,352 stars) or its MIT licence terms. Choose msw if its feature set, stack or MIT licence fits better. Both are self-hostable.